test_codecs.py 文件源码

def test_decode_callback(self):
        codecs.register_error("UnicodeInternalTest", codecs.ignore_errors)
        decoder = codecs.getdecoder("unicode_internal")
        with support.check_warnings(('unicode_internal codec has been '
                                     'deprecated', DeprecationWarning)):
            ab = "ab".encode("unicode_internal").decode()
            ignored = decoder(bytes("%s\x22\x22\x22\x22%s" % (ab[:4], ab[4:]),
                                    "ascii"),
                              "UnicodeInternalTest")
        self.assertEqual(("ab", 12), ignored)